ETSource: Cleaned up code dependent on different Python interpreters.
ETSource: Cleaned up code dependent on different Python interpreters.

Update issue 1228
Status: Done
Cleaned up the code.

userzimmermann/robotframework-python3,userzimmermann/robotframework-python3,userzimmermann/robotframework-python3,userzimmermann/robotframework-python3,userzimmermann/robotframework-python3